I've been using Aquamail for more than a year and love it. You may need to get the paid version in order to handle more than 2 email accounts. In the past, I've used K-9 and Kaiten. But Aquamail is faster, has a better interface, provides better folder views, etc.

(I don't get the hype of the HTC One, it's a nice phone, but the worst battery life, bloatware and call quality ever).

Click to expand...

I think that you don't get the hype because you have a bad device.

I have an HTC One and the battery life is phenomenal. Just have a read of my posts over in the HTC battery thread for details. I'm getting better battery life out of my HTC than I am my Note 3 with the same push mails and notifications. I've been running both side by side for a few days to see.

In my experience, call quality is great, better than my Note 3 in fact, and the bloatware on the Note is on a par with pretty much every high end phone going. For instance, I don't want Evernote, Flipboard, ChatOn, Hangouts, My Magazine and many other apps on my Note 3. I live with them though by disabling all the ones I can and hiding the icons for the rest using Nova prime. On the HTC, I disliked Blinkfeed and hated the fact that in stock Sense UI I had to have it on my springboard, whether I liked it or not.